./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:55:33,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:55:33,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:55:33,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:55:33,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:55:33,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:55:33,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:55:33,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:55:33,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:55:33,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:55:33,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:55:33,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:55:33,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:55:33,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:55:33,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:55:33,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:55:33,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:55:33,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:55:33,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:55:33,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:55:33,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:55:33,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:55:33,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:55:33,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:55:33,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:55:33,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:55:33,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:55:33,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:55:33,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:55:33,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:55:33,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:55:33,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:55:33,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:55:33,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:55:33,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:55:33,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:55:33,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:55:33,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:55:33,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:55:33,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:55:33,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:55:33,513 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:55:33,553 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:55:33,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:55:33,553 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:55:33,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:55:33,554 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:55:33,554 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:55:33,555 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:55:33,555 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:55:33,555 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:55:33,555 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:55:33,555 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:55:33,555 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:55:33,556 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:55:33,556 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:55:33,556 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:55:33,556 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:55:33,556 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:55:33,557 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:55:33,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:55:33,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:55:33,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:55:33,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:55:33,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:55:33,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:55:33,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:55:33,559 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:55:33,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:55:33,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:55:33,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:55:33,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:55:33,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:55:33,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:55:33,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:55:33,560 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:55:33,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:55:33,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:55:33,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:55:33,561 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:55:33,561 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 [2021-11-25 18:55:33,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:55:33,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:55:33,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:55:33,854 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:55:33,855 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:55:33,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i [2021-11-25 18:55:33,934 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/bin/utaipan-eEHZpOm5b7/data/feb81dc0b/ae7c2636d6e04df99b7c8130808dcbc8/FLAG2257b5219 [2021-11-25 18:55:34,759 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:55:34,759 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i [2021-11-25 18:55:34,804 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/bin/utaipan-eEHZpOm5b7/data/feb81dc0b/ae7c2636d6e04df99b7c8130808dcbc8/FLAG2257b5219 [2021-11-25 18:55:35,258 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/bin/utaipan-eEHZpOm5b7/data/feb81dc0b/ae7c2636d6e04df99b7c8130808dcbc8 [2021-11-25 18:55:35,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:55:35,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:55:35,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:55:35,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:55:35,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:55:35,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:55:35" (1/1) ... [2021-11-25 18:55:35,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fdea80a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:35, skipping insertion in model container [2021-11-25 18:55:35,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:55:35" (1/1) ... [2021-11-25 18:55:35,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:55:35,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:55:35,714 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4494,4507] [2021-11-25 18:55:35,723 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4554,4567] [2021-11-25 18:55:36,698 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:55:36,699 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:55:36,699 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:55:36,700 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:55:36,701 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:55:36,716 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:55:36,717 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:55:36,718 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:55:36,719 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:55:37,120 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 18:55:37,121 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 18:55:37,123 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 18:55:37,124 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 18:55:37,126 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 18:55:37,126 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 18:55:37,127 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 18:55:37,128 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 18:55:37,129 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 18:55:37,130 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 18:55:37,307 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 18:55:37,480 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:55:37,493 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:55:37,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:55:37,619 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:55:37,632 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4494,4507] [2021-11-25 18:55:37,637 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4554,4567] [2021-11-25 18:55:37,719 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:55:37,719 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:55:37,735 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:55:37,736 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:55:37,739 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:55:37,752 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:55:37,767 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:55:37,768 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:55:37,769 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:55:37,816 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 18:55:37,816 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 18:55:37,817 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 18:55:37,818 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 18:55:37,819 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 18:55:37,819 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 18:55:37,820 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 18:55:37,820 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 18:55:37,821 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 18:55:37,822 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 18:55:37,842 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 18:55:37,894 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:55:37,895 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:55:37,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:55:38,210 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:55:38,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:38 WrapperNode [2021-11-25 18:55:38,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:55:38,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:55:38,212 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:55:38,212 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:55:38,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:38" (1/1) ... [2021-11-25 18:55:38,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:38" (1/1) ... [2021-11-25 18:55:38,496 INFO L137 Inliner]: procedures = 691, calls = 2677, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 972 [2021-11-25 18:55:38,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:55:38,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:55:38,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:55:38,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:55:38,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:38" (1/1) ... [2021-11-25 18:55:38,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:38" (1/1) ... [2021-11-25 18:55:38,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:38" (1/1) ... [2021-11-25 18:55:38,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:38" (1/1) ... [2021-11-25 18:55:38,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:38" (1/1) ... [2021-11-25 18:55:38,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:38" (1/1) ... [2021-11-25 18:55:38,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:38" (1/1) ... [2021-11-25 18:55:38,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:55:38,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:55:38,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:55:38,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:55:38,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:38" (1/1) ... [2021-11-25 18:55:38,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:55:38,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:55:38,673 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:55:38,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:55:38,714 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-25 18:55:38,714 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-25 18:55:38,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:55:38,714 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-25 18:55:38,714 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-25 18:55:38,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:55:38,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 18:55:38,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 18:55:38,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:55:38,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:55:38,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:55:38,717 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2021-11-25 18:55:38,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2021-11-25 18:55:38,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:55:38,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:55:38,717 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-25 18:55:38,717 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-25 18:55:38,717 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-25 18:55:38,718 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-25 18:55:38,718 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 18:55:38,718 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 18:55:38,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:55:38,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:55:38,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:55:38,719 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-25 18:55:38,719 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-25 18:55:38,720 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2021-11-25 18:55:38,720 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2021-11-25 18:55:38,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:55:38,721 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-11-25 18:55:38,721 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-11-25 18:55:38,721 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-11-25 18:55:38,721 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-11-25 18:55:38,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:55:39,108 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:55:39,110 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:55:40,774 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:55:40,942 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:55:40,943 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 18:55:40,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:55:40 BoogieIcfgContainer [2021-11-25 18:55:40,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:55:40,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:55:40,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:55:40,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:55:40,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:55:35" (1/3) ... [2021-11-25 18:55:40,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592c2e2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:55:40, skipping insertion in model container [2021-11-25 18:55:40,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:38" (2/3) ... [2021-11-25 18:55:40,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592c2e2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:55:40, skipping insertion in model container [2021-11-25 18:55:40,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:55:40" (3/3) ... [2021-11-25 18:55:40,958 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_advance_harness.i [2021-11-25 18:55:40,965 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:55:40,965 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:55:41,031 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:55:41,048 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:55:41,048 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:55:41,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 73 states have internal predecessors, (87), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2021-11-25 18:55:41,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-25 18:55:41,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:55:41,088 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:55:41,089 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:55:41,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:55:41,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1776087851, now seen corresponding path program 1 times [2021-11-25 18:55:41,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:55:41,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219536360] [2021-11-25 18:55:41,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:55:41,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:55:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:55:41,903 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-25 18:55:41,903 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:55:41,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219536360] [2021-11-25 18:55:41,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219536360] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:55:41,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:55:41,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:55:41,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745777236] [2021-11-25 18:55:41,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:55:41,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 18:55:41,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:55:41,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 18:55:41,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:55:41,958 INFO L87 Difference]: Start difference. First operand has 140 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 73 states have internal predecessors, (87), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-25 18:55:42,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:55:42,122 INFO L93 Difference]: Finished difference Result 228 states and 344 transitions. [2021-11-25 18:55:42,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 18:55:42,125 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 61 [2021-11-25 18:55:42,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:55:42,136 INFO L225 Difference]: With dead ends: 228 [2021-11-25 18:55:42,136 INFO L226 Difference]: Without dead ends: 138 [2021-11-25 18:55:42,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:55:42,144 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:55:42,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 178 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:55:42,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-25 18:55:42,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-11-25 18:55:42,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 72 states have internal predecessors, (83), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2021-11-25 18:55:42,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 192 transitions. [2021-11-25 18:55:42,206 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 192 transitions. Word has length 61 [2021-11-25 18:55:42,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:55:42,208 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 192 transitions. [2021-11-25 18:55:42,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-25 18:55:42,209 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 192 transitions. [2021-11-25 18:55:42,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-25 18:55:42,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:55:42,213 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:55:42,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:55:42,214 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:55:42,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:55:42,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1392633959, now seen corresponding path program 1 times [2021-11-25 18:55:42,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:55:42,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853761616] [2021-11-25 18:55:42,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:55:42,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:55:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:55:46,051 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-25 18:55:46,052 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:55:46,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853761616] [2021-11-25 18:55:46,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853761616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:55:46,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:55:46,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-25 18:55:46,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663027053] [2021-11-25 18:55:46,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:55:46,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 18:55:46,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:55:46,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 18:55:46,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-11-25 18:55:46,056 INFO L87 Difference]: Start difference. First operand 138 states and 192 transitions. Second operand has 16 states, 11 states have (on average 2.272727272727273) internal successors, (25), 13 states have internal predecessors, (25), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2021-11-25 18:55:48,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:55:48,487 INFO L93 Difference]: Finished difference Result 210 states and 300 transitions. [2021-11-25 18:55:48,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 18:55:48,488 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 11 states have (on average 2.272727272727273) internal successors, (25), 13 states have internal predecessors, (25), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) Word has length 64 [2021-11-25 18:55:48,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:55:48,494 INFO L225 Difference]: With dead ends: 210 [2021-11-25 18:55:48,494 INFO L226 Difference]: Without dead ends: 208 [2021-11-25 18:55:48,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2021-11-25 18:55:48,497 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 114 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:55:48,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 2273 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-25 18:55:48,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-25 18:55:48,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 156. [2021-11-25 18:55:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 83 states have internal predecessors, (95), 62 states have call successors, (62), 12 states have call predecessors, (62), 12 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2021-11-25 18:55:48,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 218 transitions. [2021-11-25 18:55:48,536 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 218 transitions. Word has length 64 [2021-11-25 18:55:48,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:55:48,537 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 218 transitions. [2021-11-25 18:55:48,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 11 states have (on average 2.272727272727273) internal successors, (25), 13 states have internal predecessors, (25), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2021-11-25 18:55:48,538 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 218 transitions. [2021-11-25 18:55:48,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-25 18:55:48,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:55:48,542 INFO L514 BasicCegarLoop]: trace histogram [7, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:55:48,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:55:48,542 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:55:48,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:55:48,543 INFO L85 PathProgramCache]: Analyzing trace with hash 621632771, now seen corresponding path program 1 times [2021-11-25 18:55:48,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:55:48,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786346704] [2021-11-25 18:55:48,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:55:48,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:55:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:55:53,801 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-25 18:55:53,801 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:55:53,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786346704] [2021-11-25 18:55:53,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786346704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:55:53,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:55:53,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-25 18:55:53,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210992721] [2021-11-25 18:55:53,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:55:53,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-25 18:55:53,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:55:53,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-25 18:55:53,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2021-11-25 18:55:53,804 INFO L87 Difference]: Start difference. First operand 156 states and 218 transitions. Second operand has 19 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 16 states have internal predecessors, (26), 9 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) [2021-11-25 18:55:59,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:55:59,240 INFO L93 Difference]: Finished difference Result 282 states and 408 transitions. [2021-11-25 18:55:59,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 18:55:59,241 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 16 states have internal predecessors, (26), 9 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) Word has length 68 [2021-11-25 18:55:59,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:55:59,245 INFO L225 Difference]: With dead ends: 282 [2021-11-25 18:55:59,246 INFO L226 Difference]: Without dead ends: 280 [2021-11-25 18:55:59,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:55:59,249 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 143 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 3229 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 2242 SdHoareTripleChecker+Invalid, 3414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 3229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:55:59,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 2242 Invalid, 3414 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [185 Valid, 3229 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-25 18:55:59,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-11-25 18:55:59,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 158. [2021-11-25 18:55:59,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 82 states have (on average 1.170731707317073) internal successors, (96), 84 states have internal predecessors, (96), 63 states have call successors, (63), 12 states have call predecessors, (63), 12 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2021-11-25 18:55:59,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 221 transitions. [2021-11-25 18:55:59,322 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 221 transitions. Word has length 68 [2021-11-25 18:55:59,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:55:59,323 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 221 transitions. [2021-11-25 18:55:59,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 16 states have internal predecessors, (26), 9 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) [2021-11-25 18:55:59,324 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 221 transitions. [2021-11-25 18:55:59,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 18:55:59,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:55:59,340 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:55:59,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:55:59,341 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:55:59,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:55:59,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2035128335, now seen corresponding path program 1 times [2021-11-25 18:55:59,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:55:59,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501039856] [2021-11-25 18:55:59,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:55:59,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:10,554 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 18:56:10,554 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:10,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501039856] [2021-11-25 18:56:10,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501039856] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:56:10,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480313403] [2021-11-25 18:56:10,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:10,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:56:10,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:56:10,572 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:56:10,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34aa9f07-707f-4811-90a6-44c814766202/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:56:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:23,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 2869 conjuncts, 258 conjunts are in the unsatisfiable core [2021-11-25 18:56:23,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:56:23,817 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:56:23,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-25 18:56:24,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:56:26,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:56:27,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:56:27,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:56:29,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:29,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-25 18:56:29,407 INFO L354 Elim1Store]: treesize reduction 60, result has 34.1 percent of original size [2021-11-25 18:56:29,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 51 [2021-11-25 18:56:35,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2021-11-25 18:56:35,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:35,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:35,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:35,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:35,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:35,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:35,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:35,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 63 [2021-11-25 18:56:35,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 18:56:35,832 INFO L354 Elim1Store]: treesize reduction 158, result has 22.2 percent of original size [2021-11-25 18:56:35,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 40 treesize of output 66 [2021-11-25 18:56:46,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:56:46,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 49 [2021-11-25 18:56:47,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:47,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:47,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:47,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 26 [2021-11-25 18:56:47,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:56:47,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:47,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:47,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:47,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:47,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:47,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:47,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:47,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 92 [2021-11-25 18:56:47,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:47,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:47,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 108 [2021-11-25 18:56:47,652 INFO L354 Elim1Store]: treesize reduction 12, result has 61.3 percent of original size [2021-11-25 18:56:47,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2021-11-25 18:57:18,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:57:18,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 86 [2021-11-25 18:57:18,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:57:18,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 107 [2021-11-25 18:57:18,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:57:18,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:57:18,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 58 [2021-11-25 18:57:18,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 49 [2021-11-25 18:57:18,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:57:18,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 64 [2021-11-25 18:57:49,408 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:57:49,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 127 treesize of output 111 [2021-11-25 18:57:49,640 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:57:49,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 202 treesize of output 154 [2021-11-25 18:58:44,598 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 44 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 18:58:44,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:58:47,219 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2021-11-25 19:05:28,267 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.